The Dublin Tree map initiative is a health check on our city’s urban forest, a chance to identify what trees we have and learn how important they are. Let’s get mapping our valuable tree canopy so we can work towards a green and sustainable Dublin.

Mapping Green Dublin is proud to share the citizen science Dublin Tree Map initiative with its partners Common Ground, Artist Seoidín O’Sullivan, Dublin City Council, UCD Geography, Connect the Dots and CURIO.  The Dublin Tree Map initiative aims to map the tree species we have throughout Dublin city, and identify where the deficits are. 

Thanks to UCD Geography’s Gerald Mills and Tine Ningal, Mapping Green Dublin has mapped all the trees across Dublin and they are now uploaded now onto the CURIO website. On RTE Drivetime on May 13th Professor Gerald Mills described the tree database as a ‘fundamental part of the geography of our city. Mapping the trees establishes a benchmark for plans to make our neighbourhoods greener and improve the outdoor environment’  you can listen to his extended interview here. 

Seoidín also talked to Philip Boucher Hayes on RTE Drivetime about why her art project PLOTS responded to the 2km Covid 19 distance limit ‘The 2 km radius means we are all currently hyper local. We are walking and accessing our neighbourhoods daily and this provides an opportunity to see deficits in our communities around green infrastructure. Where can we improve cycle routes , pedestrian and wheel chair/ buggy access? How and where can we improve biodiversity and planting?’ 


Identifying Dublin’s tree species type is valuable as it helps the city to plan and cope with changing pollution and climate needs. We need a greater number of different tree species across the city and gathering that information about our urban trees is important for future resilience and biodiversity.  Can you identify trees in your street or place of work in Dublin? Use the CURIO. App. to map our city trees.  We’ve uploaded a video how to use the Curio app video below.

Curio Android

Curio Apple

Information about Curio can be found on the webpage,, which also contains links to the app on the Google Playstore and Apple Appstore (direct links to the Curio Android app and Curio iOS app).

The Dublin Tree Map initiative is a collaboration between Dublin City Council’s Parks, Biodiversity and Landscape Services; the School of Geography at University College Dublin and Mapping Green Dublin partners whose research is funded by the E.P.A. and Breadboard Labs., designers of the Curio app.

For queries to Dublin City Council on the Dublin Tree Map  or Dublin Tree Strategy contact:  

Ludovic Beaumont, City Tree Officer, Parks, Biodiversity and Landscape Services, Dublin City Council:

Dublin City Biodiversity Action Plan:  Maryann Harris, Senior Executive Parks and Landscape Officer:


The first part of Mapping Green Dublin consisted of mapping the detailed tree cover of the Dublin City Council (DCC) area, which does not exist currently. This work was done to assess the environmental services provided by the trees in the city and to identify gaps in their geography.  

In previous work, Geography at UCD in collaboration with the four Dublin local authorities and the Office of Public Works assessed tree canopy cover across Dublin county using a sampling method. By contrast, Mapping Green Dublin has mapped over 290,000 trees in DCC; each tree was digitised using a very detailed aerial image taken in summer 2018. 

The distribution of trees across DCC is very uneven as can be seen in the figures. Leaving aside the large number of trees in Phoenix Park, most are located on private lands, especially in the low-density suburbs on the north and south side of the city. By comparison, apart from public parks, there are relatively few trees in the city centre.

To examine the ecosystem services we need to know about the size and species of trees, neither of which are available. The heights of trees have been estimated using data acquired using Light Detection and Ranging (LIDAR) for the same study area. The LIDAR data can be used to estimate the size of the tree canopy, which is a critical measure of the ability of the tree to perform environmental services. To obtain tree species, Mapping Green Dublin is working with DCC and Curio ( to gather information on the trees in parks, streets and back gardens. 


This is a presentation given at the launch of our Mapping Green Dublin project by associate professor Gerald Mills form UCD Geography. The presentations includes all the tree mapping work done by the Geographers Tine Ningal and Gerald Mills. The new data gives detailed mapping of green infrastructure and ecosystem analysis for Dublin city that we hope will lead to informed future greening policy.